Pavlisko Noah D, Soares João Henrique N, Henao-Guerrero Natalia P, Williamson Allan J
Department of Small Animal Clinical Medicine, Virginia Maryland College of Veterinary Medicine, Blacksburg, VA.
J Vet Emerg Crit Care (San Antonio). 2018 Nov;28(6):579-584. doi: 10.1111/vec.12767. Epub 2018 Oct 7.
To describe a technique for gaining ultrasound-guided access to the femoral artery in an experimental model of acute hemorrhagic shock in anesthetized dogs.
Five healthy, purpose-bred adult male intact Beagles were enrolled in a respiratory mechanics study under general anesthesia. Upon completion of the primary study a hypovolemic state was induced by blood removal to achieve a mean arterial pressure ≤ 55 mm Hg. Dogs were positioned in dorsal recumbency with the hind limb extended caudally. An ultrasound probe was applied to the medial aspect of the hind limb and positioned in the transverse orientation so that the femoral artery was visualized in its short axis. The artery was identified by lack of compression and presence of visible pulsation. The probe was rotated 90° into the longitudinal orientation such that the artery was visualized in its long axis. Under ultrasound guidance a 19-gauge introducer needle was advanced into the lumen of the femoral artery. Using a modified Seldinger technique the needle was removed and a catheter was placed in the femoral artery. Correct placement of the catheter was verified by observation of the characteristic arterial blood pressure waveform. Upon completion of the study dogs were humanely euthanized. The femoral artery was successfully catheterized in 4/5 dogs and a hematoma was reported in 1/5 dogs.
Ultrasound-guided femoral artery catheterization is feasible on anesthetized dogs with concurrent acute hemorrhagic shock.
描述一种在麻醉犬急性失血性休克实验模型中，通过超声引导获取股动脉通路的技术。
五只健康的、专门繁育的成年雄性未绝育比格犬纳入全身麻醉下的呼吸力学研究。在主要研究完成后，通过放血诱导低血容量状态，使平均动脉压≤55mmHg。犬取仰卧位，后肢向尾侧伸展。将超声探头置于后肢内侧并横向定位，以便在短轴上观察股动脉。通过无压迫和可见搏动来识别动脉。将探头旋转90°至纵向，以便在长轴上观察动脉。在超声引导下，将一根19号穿刺针推进到股动脉腔内。采用改良的塞丁格技术拔出穿刺针，并在股动脉内放置一根导管。通过观察特征性动脉血压波形来验证导管的正确放置。研究完成后，对犬实施安乐死。5只犬中有4只成功进行了股动脉插管，1只犬出现血肿。
超声引导下股动脉插管在并发急性失血性休克的麻醉犬中是可行的。
